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Learning What the Gene Café Sounds Like
When I first started experimenting with audio around the Gene Café CBR-301, the objective seemed fairly obvious. Could I detect first crack more reliably? The Gene…
A Slightly Overdue Project Update: The Roaster, the Data, the Sound, and What I’m Actually Learning
First, an apology. It has been far too long since I wrote a proper update here. That is partly because the project has been busy, and…
From Roast 120 to Roast 148: When the Gene Café Project Became a Machine-State Story
The last proper website update was around Roast 120. At that point, the Coffee | One Roast at a Time project was already well beyond the…
Gene Café CBR-301 300g Roast Test Went Wrong
I had planned a simple 300g consistency test on the Gene Café CBR-301. The idea was to roast three batches back-to-back: Roast 112 — cold start…
Roasts 107 & 108: A Cold/Warm Swiss Water Decaf Pair That Stayed Lighter Than Expected
These two roasts were planned as a useful comparison pair. Same coffee.Same machine.Same batch size.Same target temperature.Different start state. The coffee was REDBER Colombia Swiss Water…
Gene Café CBR-301, What to Know Before You Buy
Gene Café CBR-301: what to know before you buy A practical owner’s view after 100 roasts, one repair, and a lot of recalibration.I have spent a…
Gene Café CBR-301 Start Here
New to my Gene Café CBR-301 videos? Start here. If you have found my Gene Café CBR-301 videos and are not sure where to begin, this…
Would I Still Recommend the Gene Café CBR-301 After 100 Roasts?
This is a field note after 100 roasts on the Gene Café CBR-301. It covers what I actually think of the machine now — not first…
One | Roast at a Time | Roasts 51–66 – Multi-Coffee Validation
Overview This set of roasts spans four different coffees and three processing styles: washed, natural, and wet hulled. The purpose was not to refine one coffee…
Roast 50 — Colombia Supremo (Washed)
Batch:250 g | 250 °C | Cold Start TRT: 13:21 | Weight Loss: 16.0% This roast marks the first Colombia Supremo roast in the project and…
Roast #49 – Honduras Pacas (Washed)
Finca El Paraíso — Santa Barbara, HondurasProducer: Wil Edilberto ArmijoVariety: Pacas (Bourbon mutation)Altitude: 1550 m This roast was intended as a personal roast for drinking, but…
Roast 48 – Colombia SWP Decaf (Swiss Water Process) | Personal Roast
This roast was carried out as a simple personal roast intended for home espresso. The coffee was a Colombia Swiss Water Process (SWP) decaf, and the…
A few places to start
First crack · Cold and warm starts · Water · Coffee pricing · All articles
For a roast record, try its number, coffee name, origin or process. For orientation, visit Start Here. The Roasting path follows Beginner → Intermediate → Advanced; Understanding Coffee lets you explore subjects in any order.